Kara was making decorations for a school dance. She has a small figure to use for a pattern, but needs the actual
decorations to be much larger. Which scale factor might she use to make her decorations?
5 1 1/5 -1/5

k = 5

Step-by-step explanation:

When a certain number is multiplied by a scale factor , the  final number is given by

and the final number will be:

- Larger than the original number if

- Smaller than the original number if

In this problem, the number represents the size of the decoration.

If we apply the 4 scale factors given, we have:

- If , then : this means that the final decoration is larger than the original decoration --> this is the correct option

- If , then : so the final decoration has same size as the original decoration

- If , then : so the final decoration is smaller than the original decoration

- If , then , so the final decoration is smaller and inverted